Turbine and rotary compressor



Filed Jan. 11. 1926- 2 Sheets-Sheet 1,

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c. LoRENzEN TURBINE AND ROTARY COMPRESSOR Filed Jan'.1 1. 192e 2 sheets-sheet 2 l 70/ y 2V -g 22 22 24 2a il /f l 27 uw C czr:` k2

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ATTORNEYS Patented Aug. 3o, A1921. y y 1,640,784

AUNITED STATES PATENT OFFICE.

CHRISTIAN LORENZEN, OF BERLIN, GERMANY, ASSIGNOR T LORENZEN-TURBINEN AKTIENGESELLSCHAFT, `0l' BERNE, SWITZERLAND, A CORPORATION OF SWITZER- LAND.

TUBBINE ANZI) ROTARY COMPRESSOB Application led January 11, 1926, Serial lo. 80,424, and 1n Germany January 27, 1925.

My present invention relates toV turbines rotor body. Within the chamber 6 which and rotary compressors, and in its preferred is formed between the two halves or sections embodiments combines a turbine with a ro- 0f the rotor body, I arrange the radialvcomtary air compressor. The objects of my npressor blades 7 which are rigid and prefvention include improved means for conerably integral with a central core portion 55 ducting the air or other medium to be com- 8 which forms part of the rotor shaft andpressed, to the central or axial portion of has its ends fitted into the sleeves 4.Y The the rotor, for increasing the suction effect shaft has journal portions 9, 10 supported by which such medium is drawn into the 1n bearings. 11, 12 respectively which are lo- 1o rotor, for efficiently accomplishing a gradual cated w1thm the air inlet pipes 13, 14 re- 60 change in the stream of such medium from spectively which at the same time constituteA an axial to a substantiallyradial direction, standards for supporting the stator by fitfor simplifyin the construction, particultmg into recesses at the central portions of larly as regards easy assembly and rigid the disks 1. The pipes 13, 14 are shown asv 15 connection of the stato'r parts, and for. 1nconverging upwardly, thus giving greater 65 creasing the compactness 'and general efiistability to the frame or housmg of the maciency of the entire machine. chlne, and the lower ends of sald pipes are Two typical and satisfactory embodiments shown flanged at 13', 14 for convenient of my invention will now be described 11n boltingto a suitable base 15, which of course detail with reference to the accompanying will have channels 16 registering with the 70 drawings, in which Fig. '1 is an axial secpipes 13, 14 and onen' to the surrounding air. tion of a turbo-compressorconstructed ac- The rotor shaft has threaded portions 17 cording to my present invention; Figs. 2 and between the bearings 11, 12 and the core 8, 3 are partial, sections on line 2-2 and 3-3 and on these portions are screwed nuts 18 y respectively of Fig. 1; and Fig. 4 is an axial whlch bear agalnst theouter ends of the 75 section showing another form of turbo-comsleeves 4 and thus press the 'rotor disks 2 pressor embodying my improvements. toward each other, to clamp 1n position the In the construction illustrated by Figs. l, turbine blades 19 which are thus held rig- 2 and 3, the stator is`shown as comprising idly between thedlsksr2 to rotate in unison 3o two similar sections lor halves joined at the wlth them. vThe flanged Ainner ends or bases 8o plane 1J-a, each of said sections includin of these blades are fitted into annular a disk-like portion 1 of more or less conica grooves of the disk-like portions 2. shape, the two portions 1 converging 'toward The blades 19 are hollow, the inner ends the periphery.` Within the chamber'formed of their radial passages communlcat with 35 between said portions 1, I arrange the body the chamber 6 while their outer en s dis- $5 of the rotor, said body consisting of two charge into an annular collector channel disk-like portions 2 of a shape similarto 2O from which the compressed air is con- 1| the stator portions 1 and arranged to reveyed to the place of use through an outlet volve adjacent thereto. The central porpipe 21 or otherwise. 'Ihe outer surfaces of tions of the rotorbody disks yare extended the blades are ofproper shape to produce outwardly in an axial direction to form anrotation of the rotor as such surfaces are nular substantially cylindrical flanges ..3 struck by the propelling medium (.for in within which are arranged concentrically stance, combustion gases under p'rssure) sleeves 4 connected with the outer flanges issuing from nozzles 22 to which it is sup- 45 `3 by ribs or vanes 5 to which I prefer to give plied' from an annular chamber 22 having 05 a screw shape of such nature that rotation an inlet 23 for such gases. After impelling of the rotor in the normal direction -will the rotor, the power gases pass into a chamcause the screw vanes to feed or suck air ber 24 having an outlet 25. These chambers inwardly as indicated by the arrows.y The 22', 24 as well as the collector 20 are shown 5o parts 3, 4, 5 constitute hub portions for the as formed in `ortions of the stator body 100 integral with the disks 1, and the two halves of the stator as bolted together at the abutting flanges 26 located along the outer edges of the collector channel 20.

The air is drawn in through the pipes l13, 14 by the suction due to the action of the compressor blades 7 and of the screw vanes 5. In order to effectv a gradual change in the course of the air from t-lie axial direction in which it streams around the beardings 11, 12 and sleeves 4 to the radial direction in which it flows in the outer portion of the chamber 6, the core 8 is made yof enlarged diameter in the plane of rota- 'ing as indicated at 29, so that power may be taken from the shaft as throu h a clutch 30 to drive other machinery; ut if the power of the turbine is to be used exclusive- 1y for driving the air compressor, the left hand end of the rotor shaft would be constructed exactly as shown for the right hand end thereof Ain Fig. 1. 'Ihe flanges 13', 14 of the pipes 13, 14 are preferably mounted to slide in straight aligning guides 15' of'dovetail or other suitable formation provided in the base 15, to facilitate assembly of the machine.

In the form of my invention illustrated by Fig.y 4, the central enlargement of the core 8 is formed as a web 8 extending outwardly as far as the` disk-like portions 2 of the rotor body and made with an annular flange or head 8 to form grooves which, in connection with similar grooves in the disks 2, receive the inner portions orlbase flanges of the rotor blades 19', 'of which there are two annular sets in this form of my invention. Radial compresspr blades 7' are provided on each side of the web 8', integral therewith. As in the form of my invention first described, the air current A radial direction. In

passes to the rotor in a substantially axial direction and is then radually changed to a ig. 4, the two vstreams of air on opposite sides of the web 8' are entirely separate, and therefore this form 4of my invention may be used as a twostage compressor, if desired. For instance, air from the surrounding atmosphere might enter through the pipe 13, be compressedy on the left-hand side of the machine, delivered to `the collector 20' and pass out through the outlet 21' and a suitable pipe 31 to the. base channel 16 connected with,n the right-hand pi e 14. The air would then be compressed 1 urther on the right hand side of the machine and delivered to the collector 20" provided with an outlet 21". Between the two sets of rotor blades 19 vwhich serve to deflect and in a certain sense reverse the flow of the combustion gases or other power gases `which operate the rotor. The other parts of the machine may be of the same construction as in tlie form of my machine first described, as will be evident from the reference numerals'employed.

Various modifications may be made without departing from ythe nature of my invention as defined in the appended claims.

The bearings 11,12 are preferably con-- nected with the adjacent portions of the pipes 13, 14 respectively by ribs 33 which may be given an oblique or helical formation so that the air will be given a twist or initial rotary motion (in the same direction as by the vanes 5) even before such air enters the rotor. The air, by flowing around the said bearings, keeps them cool.

I claim:

1. In a rotary compressor, a rotor having a substantially axial inlet for the fluid to be compressed and a peripheral outlet for the compressed fluid, a normally stationary pipe communicating with said inlet and provided with a bearing for said rotor, and a base provided with a guide, parallel to the rotor axis, along which said pipe may be adjusted.

2. In a rotary compressor, a rotor having a substantiall axial inlet for the fluid to be compresse and a peripheral outlet for the compressed fluid, a normally stationary pipe communiizating` with said inlet and provided with a bearing for said rotor, and a base provided with a guide, parallel to the rotor axis, along which said pipe may be adjusted, .said base having an admission channel in registry with said pipe.

3. In a rotary compressor, a rotor having an axial inlet for the medium to be compressed, and a peripheral outlet for the conipressed niedium, a stator having an intake passage communicating with the rotor inlet, a shaft for said rotor, a hearing for said shaft positioned in said passage and spaced from the walls thereof, and bearing supports extending from the walls of said passage to said bearing.

4. In a rotary compressor, a rotor having an axial inlet for the fluid to be compressed,

a stator having` an intake passage communieating with the rotor inlet, a shaft for said rotor, a bearing for said shaft positioned in said passage to be cooled by said fluid, and

spiral ribs extending from the walls of said .passage to said bearing to maintain the bearing in position and to impart an initial rotary motion to the fluid before its admission to the rotor.

5. In a rotary compressor, a rotor having an axial inlet for the fluid to be compressed, a stator having an internal passage communicating with the rotor inlet, a shaft for said rotor, a bearing for said shaft posidoned in said passage to be cooled by said Huid, spiral ribs extending sage to said bearing to maintain the beaimg in position and to impart an initial rotary motion to the iuid before its admission to the `rotor, the Walls of said passage. being from the Walls of said pasaccess may b and a door northrough which e had to said bearing.

In testimony whereof I have hereunto set my hand.

CHRISTIAN LORENZEN. 

